A production device for preparing radioactive iodine-131 by continuous feeding

A technology of radioactive iodine and production equipment, which is applied in the field of radioisotope preparation, can solve the problems of small dry processing capacity and inability to continuously feed materials, and achieve the goals of avoiding radioactive solid waste of quartz boats, reducing personnel workload, and improving work efficiency Effect

Active Publication Date: 2021-08-24
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production device for preparing radioactive iodine-131 by continuous feeding, which solves the problem that the existing dry process has a small processing capacity and cannot continuously feed

Method used

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  • A production device for preparing radioactive iodine-131 by continuous feeding
  • A production device for preparing radioactive iodine-131 by continuous feeding
  • A production device for preparing radioactive iodine-131 by continuous feeding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-Figure 3As shown, a production device for preparing radioactive iodine-131 by continuous feeding includes a retort furnace 2, and the retort furnace 2 includes a heating furnace body 12, and the heating furnace body 12 is provided with an insulating layer, a resistance wire 13 and a thermoelectric Even, the heating furnace body 12 is a rectangular parallelepiped, and the heating furnace body 12 is front and rear opening type, that is, the front end and the rear end of the heating furnace body 12 are provided with a furnace cover, and the furnace cover has an automatic switch cover function, and the furnace cover is formed by The controller controls the automatic opening and closing, the resistance wire 13, the thermocouple and the furnace cover are electrically connected to the controller, the heating furnace body 12 is provided with a T-shaped furnace tube 14, and the T-shaped furnace tube 14 includes a large round tube. The two ends of the large roun...

Embodiment 2

[0045] Such as Figure 1-Figure 4 As shown, the present embodiment is based on embodiment 1, the outlet pipe 18 is connected to the tellurium dioxide trap 3, and the tellurium dioxide trap 3 is connected to the absorption device 4; the tellurium dioxide trap 3 Including a housing 24, a heating and heat preservation device is arranged in the housing 24, a tellurium dioxide trapping coil 23 is arranged in the heating and heat preservation device, and the tellurium dioxide trapping coil 23 is a tubular structure, the The tellurium dioxide collection coil 23 is spirally arranged in the casing 24 , and the two ends of the tubular structure communicate with the gas outlet pipe 18 and the absorption device 4 respectively.

[0046] In this embodiment, the working temperature of the heating and heat preservation device is higher than the iodine desublimation temperature and lower than the boiling point of tellurium dioxide. The content of Te impurity in the product is reduced.

[004...

Embodiment 3

[0050] Such as Figure 1-Figure 4 As shown, the present embodiment is based on embodiment 1 or embodiment 2, and the rear end of the absorption device 4 is connected with a tail gas treatment device 5; Sodium hydroxide solution absorbs iodine vapor, and 0.1-5mol / l sodium hydroxide solution is used to absorb tail gas in the second, third and fourth stages of absorption.

[0051] In this embodiment, the tail gas treatment device 5 is an iodine vapor absorption device, which can ensure complete absorption of iodine in the iodine-131 tail gas.

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Abstract

The invention discloses a production device for continuously feeding radioactive iodine-131, comprising a retort furnace, the retort furnace includes a heating furnace body, and a T-shaped furnace tube is arranged in the heating furnace body, and the T-shaped furnace tube includes a large round tube, a large round The two ends of the pipe are respectively connected with the air inlet pipe I and the air outlet pipe, and the air outlet pipe is connected with the absorption device. A small round pipe is vertically arranged on the side wall of the large round pipe, and a material boat is placed in the large round pipe. The material boat includes an upper layer and a lower layer connected. It is a molten material pool, and the lower layer is a waste material pool. The molten material pool is arranged below the small round tube. A feeding device is arranged above the dry distillation furnace. The charging device includes a feeding funnel, and the bottom of the feeding funnel passes through the hollow tube and the small round The pipe is connected, and the upper end and the lower end of the hollow pipe are respectively provided with a feeding valve I and a feeding valve II, and also includes a control system, and a controller for realizing automatic control is arranged in the control system. The invention solves the problem that the existing dry process has a small processing capacity and cannot continuously feed materials.

Description

technical field [0001] The invention relates to the technical field of radioisotope preparation, in particular to a production device for continuously feeding radioactive iodine-131. Background technique [0002] Iodine-131 is a very important medical radioisotope, which is mainly used clinically for the diagnosis of thyroid function, hyperthyroidism and the treatment of thyroid cancer metastases. In addition, iodine-131 is also an important raw material for a variety of labeled drugs, which are used for imaging and killing a variety of solid tumor cells in kidney, liver, myocardium, and brain. However, most of the domestic iodine-131 depends on imports at present. [0003] There are two main production methods for iodine-131: one is to use enriched uranium-235 as the target material, through fission reaction 235 U(n,f) 131 1 obtains iodine-131, but this production process has side reactions, produces many impurities, and the separation and purification process conditions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/08C01B7/14
CPCB01J19/08C01B7/14
Inventor 张劲松陈云明罗宁贾致军曾俊杰王定娜孙志中
Owner NUCLEAR POWER INSTITUTE OF CHINA
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